<template>
    <div class="cmt-container">
        <h3>发表评论</h3>
        <hr>
        <textarea placeholder="请输入要bb的内容（不超过120字）" maxlength="120" v-model="msg"></textarea>

        <mt-button type="primary" size="large" @click="pushCom">发表评论</mt-button>

        <div class="cmt-list" >
            <div class="cmt-item" v-for="(item, index) in comments" :key="index">
                <div class="cmt-title">
                    第 {{ index + 1 }}楼&nbsp;&nbsp;用户:{{ item.user_name }}&nbsp;&nbsp;发表时间:{{ item.add_time | dateFormat }}
                </div>
                <div class="cmt-body">
                    {{ item.content === 'undefined' ? '此用户未做评论..' : item.content }}
                </div>
            </div>
        </div>

        <mt-button type="danger" @click="getMore" size="large" plain>加载更多</mt-button>
    </div>
</template>

<script>
import Toast from 'mint-ui'
export default {
    data () {
        return {
            pageindex: 1,
            comments: [],
            msg: ''
        }
    },
    created(){
        this.getComments()
    },
    methods: {
        getComments() {
            this.$http.get('getcomments/' + this.id + '?pageindex=' + this.pageindex)
            .then(res => {
                if(res.body.status === 0){
                    this.comments = this.comments.concat(res.body.message)
                }else{
                    Toast('获取失败了...')
                }
            })
        },
        getMore(){
            this.pageindex ++
            this.getComments()
        },
        pushCom(){
            if(this.msg.trim() === ''){
                Toast('内容不能为空...')
            }

            this.$http.post('postcomment/' + this.$route.params.id, {
                content: this.msg.trim()
            })
            .then(res => {
                if(res.body.status === 0){
                    var cmt = {
                        user_name: '匿名用户',
                        add_time: Date.now(),
                        content: this.msg.trim()
                    }
                    this.comments.unshift(cmt)
                    this.msg = ''
                }
            })
        }
    },
    props: ['id']
}
</script>

<style lang="scss" scoped>
    .cmt-container{
        h3{
            font-size: 18px;
        }
        textarea{
            font-size: 14px;
            height: 85px;
            margin: 0;
        }
        .cmt-list{
            margin: 5px 0;
            .cmt-item{
                .cmt-title{
                    font-size: 13px;
                    background-color: #ccc;
                    line-height: 30px;
                }
                .cmt-body{
                    font-size: 14px;
                    line-height: 35px;
                    text-indent: 2em;
                }
            }
        }
    }
</style>